含镍、铬复合氧化球团的制备工艺

doi:10.13228/j.boyuan.issn0449-749x.20190486

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Abstract The use of cheap low grade chromite concentrate and laterite nickel ore to prepare composite pellets containing nickel and chromium for the production of nickel and chromium stainless steel master alloys in blast furnace is of great significance for the sustainable development of China's stainless steel industry. The preparation process of nickel-containing and chrome-containing pellets was systematically studied, and the effects of adding nickel laterite,chromite,and additive were carried out. The results show that, the compressive strength of fired nickel laterite pellet can reach over 2 500 N/pellet while preheating at 1 000 ℃ for 12 min and firing at 1 220-1 250 ℃ for 12 min. The mixture contained 45% of nickel laterite, 15% of chromite and 40% of iron ore, by adding with 7.7% of additive and pretreated by high-pressure roller grinding. The product pellet can be used as a high-quality burden for blast furnace to manufacture Fe-Cr-Ni alloys.

Key words： nickel laterite chromite pelletization stainless parent alloy

Received: 03 September 2019

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	Articles by authors
	WANG Xin
	PAN Jian
	ZHU De-qing
	GUO Zheng-qi
	TIAN Hong-yü

Cite this article:

WANG Xin,PAN Jian,ZHU De-qing等. Process of pelletization of nickel laterite and chromite[J]. Iron and Steel, 2020, 55(3): 23-28.

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http://www.chinamet.cn/Jweb_gt/EN/10.13228/j.boyuan.issn0449-749x.20190486 OR http://www.chinamet.cn/Jweb_gt/EN/Y2020/V55/I3/23

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